38660011566 has 32 divisors (see below), whose sum is σ = 85608067968. Its totient is φ = 11540300640.

The previous prime is 38660011561. The next prime is 38660011583. The reversal of 38660011566 is 66511006683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38660011561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4366905 + ... + 4375748.

It is an arithmetic number, because the mean of its divisors is an integer number (2675252124).

Almost surely, 2^38660011566 is an apocalyptic number.

38660011566 is an abundant number, since it is smaller than the sum of its proper divisors (46948056402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38660011566 is a wasteful number, since it uses less digits than its factorization.

38660011566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8742736.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 38660011566 in words is "thirty-eight billion, six hundred sixty million, eleven thousand, five hundred sixty-six".